Feat even grid hovers

This adds hover styling to the work page.

It also adds a color palette partial, `{{> _color-palette}}`, which makes divs for all color variables. Currently the SCSS file that handles this styling, `_color-palette.scss` is commented out, as it generates a lot of code that shouldn't end up in production.

I made the palette for my own convenience, and thought it might be nice to have. Related to Issue #53